Truman
发表于 2025-3-21 17:23:28
书目名称Seeing Stars影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0863755<br><br> <br><br>书目名称Seeing Stars读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0863755<br><br> <br><br>
flamboyant
发表于 2025-3-21 21:52:42
1431-9756of amateur telescope, providing the reader with a reference.Seeing Stars. is written for astronomers, regardless of the depth of their theoretical knowledge, who are taking their first steps in observational astronomy. Chris Kitchin and Bob Forrest - both professional astronomers - take a conducted
连系
发表于 2025-3-22 02:31:56
Your Telescope and How to get the Best Out of It,rmanently mounted in a dome or has to be brought out of storage when you want to observe, and by no means least, on how much you can afford to spend. Without this last constraint, all amateur astronomers would probably have a Hubble space telescope or a Keck telescope of their own.
难解
发表于 2025-3-22 08:23:52
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颠簸地移动
发表于 2025-3-22 09:02:18
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门闩
发表于 2025-3-22 13:22:05
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令人苦恼
发表于 2025-3-22 20:27:08
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SYN
发表于 2025-3-22 23:46:25
The Sun,or through binoculars or a telescope, unless correctly using a suitable professionally produced filter (Section 3.2). Smoked glass and over-exposed film (which are sometimes suggested as suitable filters) are NOT safe; they may still let the infrared part of the Sun’s radiation through.
不再流行
发表于 2025-3-23 03:14:08
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哎呦
发表于 2025-3-23 06:16:12
The Planets and Minor Solar System Objects,se, Uranus and Neptune at best are only 4 and 2.5 seconds of arc across respectively, and so little or no detail can ever be seen on them. The four Galilean satellites of Jupiter — Io, Europa, Callisto and Ganymede — can just be seen to be non-point sources under the best observing conditions. The r